Dayton, Ohio Weather
Camellia Blooms Break Through. Day 50 of autumn. Read this microseason across nine climate regions →
Dayton weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 2:34 PM EST · Open-Meteo
- TodayNov 10Clear——68°39°—
- WednesdayNov 11Clear53%0.10″64°40°-4°
- ThursdayNov 12Rain71%0.61″50°37°-14°
- FridayNov 13Foggy11%—44°32°-6°
- SaturdayNov 14Partly Cloudy——44°31°0°
- SundayNov 15Clear——46°31°+2°
- MondayNov 16Overcast——49°34°+3°
Air quality now AQI 33 · Good
AQI 33 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 30 now. With UV 1.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 30 now. With UV 1.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8.
- Present
- AQI 30
- UV peak
- 1.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 8
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
When the wind is in the west, the weather is at its best.
- Moonrise
- 8:55 AM
- Moonset
- 6:03 PM
- In sign
- ♐︎ Sagittarius
Camellia Blooms Break Through
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Dayton at a glance
- Today vs. normal: Today averages 54°F (high 68°F, low 39°F), 10°F above the 44°F normal for Nov 10
- Last frost: April 18 (1991–2020 median, NOAA station 2 km away)
- Microseason: Nov 6–10
- Planting calendar: November — harvest fall brassicas, carrots
16-Day Forecast — Dayton
- Tue68°39°0%
- Wed64°40°55%
- Thu50°37°48%
- Fri44°32°11%
- Sat44°31°0%
- Sun46°31°1%
- Mon49°34°6%
- Tue50°34°2%
- Wed51°35°1%
- Thu53°36°3%
- Fri59°46°8%
- Sat63°45°29%
- Sun62°38°43%
- Mon38°24°41%
- Tue31°22°17%
- Wed40°23°10%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Dayton
Interactive wind and temperature map centered on Dayton — it loads in your browser. Open the full weather map.
Right now in the garden
Post-frost dormancy
As of November 10, the season's first frost (typically October 25) is due or past. Bring frost-tender plants indoors, mulch overwintering beds, and turn spent plantings under. This city's planting calendar for November: harvest fall brassicas and carrots.
SPC Convective Outlook
Storm Prediction Center — Dayton
SPC includes Dayton in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Dayton
Dayton sits in Montgomery County, where the year’s longest day runs 14h 59m of daylight and its shortest just 9h 21m — a swing of +5h 39m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Cincinnati, the state’s largest city, lies about 47 miles to the SSW. The nearest town Dayton tracks is Middletown, roughly 21 miles to the SSW.
Air quality in Dayton
Air quality in Dayton’s county has trended cleaner since 2020; its cleanest year on record was 2025 (median AQI 46). See the full air-quality history for Dayton.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes | radishes |
| May | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| July | tomatoes, peppers, beans, squash | lettuce, peas, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
Dayton peaks at about 75°F in July and bottoms near 27°F in January; May brings the heaviest rain (4.4 inches) and September the least (2.5 inches).
| Month | Mean temp | Precip |
|---|---|---|
| January | 27° | 2.8″ |
| February | 30° | 2.9″ |
| March | 40° | 4.0″ |
| April | 52° | 4.1″ |
| May | 61° | 4.4″ |
| June | 70° | 3.8″ |
| July | 75° | 3.4″ |
| August | 74° | 3.1″ |
| September | 68° | 2.5″ |
| October | 56° | 2.6″ |
| November | 42° | 3.0″ |
| December | 31° | 3.7″ |
Regional context
Similar climates Fort McKinley, OH, Shiloh, OH, Riverside, OH
Dayton's climate, from modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), pairs 27°F Januarys with 75°F Julys — a 48°F swing. About 40.2 inches of precipitation falls each year.
No season owns Dayton's rain: May reaches 4.4 inches and September keeps 2.5 inches, an even spread through Dayton's year. That lines Dayton up with places like Fort McKinley, OH, Shiloh, OH and Riverside, OH, fed by overlapping storm tracks.
The cool-season window in Dayton starts at April 18, when nights stop freezing — think kale, peas, spinach, and parsnips. Warm-soil crops in Dayton wait about two weeks past Dayton's last frost, once the soil warms. Dayton's window closes around October 25 as Dayton's overnight lows return below freezing. Sheltered Dayton yards can escape a light frost.
Similar climates: Fort McKinley, OH, Shiloh, OH, Riverside, OH, Oakwood, OH, Drexel, OH.
Frequently asked
- When does it freeze in Dayton?
- In Dayton, expect the last spring frost near April 18; Dayton's first autumn frost comes around October 25.
- What is the rainy season in Dayton?
- May is the wettest month in Dayton, about 4.4 inches on average; the year totals roughly 40 inches.
- What is the warmest month in Dayton?
- The warmest stretch in Dayton comes in July, around 75°F on average.
- What is the coldest month in Dayton?
- On average January is the chilliest month in Dayton, about 27°F.
- When can I start a vegetable garden in Dayton?
- Frost-hardy sowings begin at April 18 in Dayton; warm-season starts follow two weeks on.
- What hardiness zone is Dayton?
- Dayton's USDA zone comes from its January mean (27°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Dayton?
- Dayton's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Dayton?
- See this week's day-by-day rain chances for Dayton in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Dayton?
- Current conditions for Dayton and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Dayton forecast updated?
- The Dayton forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Dayton?
- Today's sunrise and sunset times for Dayton are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Dayton?
- The next few days in Dayton's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Dayton sits at 39.8°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Dayton
- 45377
- 45401
- 45402
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- 45404
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